Home
Class 12
PHYSICS
An empty wagon of mass m0 is stationary ...

An empty wagon of mass m0 is stationary & is filled with sand at rate of `mu` kg/sec. from a stationary hopper ? find -
Force, F as function of time that has to be applied to maintain its all constant equal to v.

A

`muv`

B

`2muv`

C

`sqrt3muv`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • CENTRE OF MASS

    MOTION|Exercise Exercise - 2 (Level-II)|28 Videos

  • CENTRE OF MASS

    MOTION|Exercise Exercise - 3 Level-I|34 Videos

  • CENTRE OF MASS

    MOTION|Exercise Exercise - 1|71 Videos

  • Capacitance

    MOTION|Exercise EXERCISE -4 LEVEL II|19 Videos

  • CIRCULAR MOTION

    MOTION|Exercise EXERCISE - 4|16 Videos

Similar Questions

Explore conceptually related problems

Find velocity of wagon as function of time when it is being filled with stationary hopper at the rate mu kg/sec. and constant force F is applied horizontally on the wagon as shown in figure. M_(0) is the mass of the wagon and initial speed of the wagon u = 0 at time t = 0.

A flatcar of mass m_0 starts moving to the right due to a constant horizontal force F(figure). Sand spills on the flatcar from a stationary hopper. The velocity of loading is constant and equal to mukg//s . Find the time dependence of the velocity and the acceleration of the flatcar in the process of loading. The friction is negligibly small.

An empty box of mass 5kg is found to accelerate up at the rate of g/6 when a constant force vec(F) is applied on it. Howm much mass (in kg ) of sand be filled in it so that box may accelerate down at the same rate ? (g beight the acceleration due to gravity).

A constant force (F) is applied on a stationary particle of mass 'm' The velocity attained by the particle in a certain displacement will be proportional to .

Find an expression for, the acceleration and speed of a trolley A under the action of a constant force F if it contains sand that pours out through the floor at the rate of mu per second. The speed of the trolley at t=0 was v=0 and the initital mass of sand and trolley was M_(0)

A machine gun has a mass of 200 kg. It fires 35 g bullets at the rate of 40 bullets per sec with a speed of 400 m/s. Find the horizontal force need to be applied on the gun to keep it in fixed position ?

A small body of mass m is given velocity v_0 at point O on rough horizontal surface. (a) Find the mean power developed by the friction force during the whole time of motion if the friction coefficient is constant and equal to mu_0 (b) Find the maximum instantaneous power developed by the friction force, if the friction coefficient varies as mu=mu_0x , where mu_0 is a constant and x is the distance from the point O .

A mass of m kg is subjected to a constant force of F kg.wt for t sec, initially the body is being at rest. Under the action of force the body moves a distance x metres (in t secs) and acquires a velocity of V m/s .Then x is

MOTION-CENTRE OF MASS-Exercise - 2 (Level-I)
  1. A system consists of two cubes of mass m(1), and m(2) respectively con...

    Text Solution

    |

  2. The diagram shows the velocity - time graph for two masses R and S tha...

    Text Solution

    |

  3. In the figure (i), (ii) & (iii) shown the objects A, B & C are of same...

    Text Solution

    |

  4. Figure shows the velocity-time graph for two masses R and S that colli...

    Text Solution

    |

  5. In a smooth stationary cart of length d, a small block is projected al...

    Text Solution

    |

  6. A ball is projected from ground with a velocity V at an angle theta to...

    Text Solution

    |

  7. In the figure shown, the two identical balls of mass M and radius R ea...

    Text Solution

    |

  8. In the above, suppose that the smaller ball does not stop after collis...

    Text Solution

    |

  9. Which of the following does not hold when two particles of masses m(1)...

    Text Solution

    |

  10. A metal ball hits a wall and does not rebound whereas a rubber ball of...

    Text Solution

    |

  11. Before a rubber ball bounces off from the floor the ball is in contact...

    Text Solution

    |

  12. A ball of 0.1kg strikes a wall at right angle with a speed of 6 m/s an...

    Text Solution

    |

  13. A block of mass m starts from rest and slides down a frictionless semi...

    Text Solution

    |

  14. Two billiard balls undergo a head-on collision. Ball 1 is twice as hea...

    Text Solution

    |

  15. An empty wagon of mass m0 is stationary & is filled with sand at rate ...

    Text Solution

    |

  16. An empty wagon of mass m0 is stationary & is filled with sand at rate ...

    Text Solution

    |

  17. Find N of ground on chain when chain has fallen through distance x. Li...

    Text Solution

    |

  18. If rocket engine ejects fuel at the rate mu kg/s with relative velocit...

    Text Solution

    |

  19. If rocket engine ejects fuel at the rate mu kg/s with relative velocit...

    Text Solution

    |

  20. Find thrust force on hose pipe. Density of liquid is p.

    Text Solution

    |